Is Noblesville, IN Tap Water Safe? Quality & Contaminants

What was found in Noblesville's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate	310 µg/L 3.1% of the EPA limit 10000 µg/L Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2019 Highest in the city: 5420 µg/L — HARRIS HILLS MOBILE HOME PARK · 27 people · 2019	5/5	SYR4
Fluoride	1234 µg/L 31% of the EPA limit 4000 µg/L Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2018	5/5	SYR4
Barium	200 µg/L 10% of the EPA limit 2000 µg/L Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2018 Highest in the city: 334 µg/L — SUBURBAN ESTATES, LLC · 350 people · 2017	5/5	SYR4
Nitrate-Nitrite	322 µg/L 3.2% of the EPA limit 10000 µg/L Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2019	1/5	SYR4
Copper	181.75 µg/L 14% of the EPA limit 1300 µg/L Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2017	4/5	SYR4
TTHM	27.02 µg/L 34% of the EPA limit 80 µg/L Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2019	1/5	SYR4
Lithium	18.2 µg/L No EPA limit set Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2024	1/5	UCMR-5
Total Haloacetic Acids (HAA5)	10.18 µg/L 17% of the EPA limit 60 µg/L Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2019	1/5	SYR4
Arsenic	8.2 µg/L 82% of the EPA limit 10 µg/L Highest in the city: SUBURBAN ESTATES, LLC · 350 people · 2019	3/5	SYR4
Chromium	6.95 µg/L 7% of the EPA limit 100 µg/L Highest in the city: SUBURBAN ESTATES, LLC · 350 people · 2017	1/5	SYR4
Lead	4.9 µg/L 33% of the EPA limit 15 µg/L Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2017	3/5	SYR4
Gross Alpha, Excl. Radon And U	2.2 pCi/L 15% of the EPA limit 15 pCi/L Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2014 Highest in the city: 4.86 pCi/L — TALL TIMBERS MOBILE HOME PARK · 90 people · 2014	3/5	SYR4
Gross Beta Particle Activity	4.02 pCi/L No EPA limit set Highest in the city: HARRIS HILLS MOBILE HOME PARK · 27 people · 2017	1/5	SYR4
Combined Uranium	1.185 µg/L 4% of the EPA limit 30 µg/L Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2014 Highest in the city: 1.7 µg/L — TALL TIMBERS MOBILE HOME PARK · 90 people · 2014	2/5	SYR4
1,2,4-Trichlorobenzene	0.6000 µg/L 0.9% of the EPA limit 70 µg/L Highest in the city: TALL TIMBERS MOBILE HOME PARK · 90 people · 2019	1/5	SYR4
Lead	0.0050 mg/L 33% of the EPA limit 0.0150 mg/L Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2023	5/5	LCR
Pfpea	0.0033 µg/L No EPA limit set Main supplier: INDIANA AMERICAN WATER - NOBLESVILLE · 45,575 people · 2024	1/5	UCMR-5

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Noblesville

Supplier	Population served
INDIANA AMERICAN WATER - NOBLESVILLE	45,575
SUBURBAN ESTATES, LLC	350
TALL TIMBERS MOBILE HOME PARK	90
MAPLEWOOD ESTATES MHC LLC	37
HARRIS HILLS MOBILE HOME PARK	27

Frequently asked questions about Noblesville tap water

Is Noblesville tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Noblesville. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Noblesville?

5 public water suppliers report drinking-water monitoring for Noblesville, Indiana to the EPA. Each is listed above with its population served.

What contaminants are in Noblesville's water?

The contaminants EPA monitoring detected in Noblesville include Nitrate, Fluoride, Barium, Nitrate-Nitrite, Copper. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.